Bios and Uefi firmware is the low-level code that starts your computer before Windows loads. It initializes the processor, memory, storage controllers, and other core components, then hands control to the operating system. Because this firmware runs beneath everything else, a Bios or Uefi update is not a routine driver update. It is a maintenance task that carries real risk, and it should only be performed when there is a specific reason to do so, such as a fix documented by your system or motherboard maker, support for a newer processor, or a security advisory.
On a prebuilt desktop or a laptop, the correct firmware comes only from the computer or motherboard manufacturer, matched exactly to your model and, on laptops, to the OEM package. Do not use a firmware file made for a different board revision or model, and do not rely on third-party utilities that claim to update Bios automatically. The safest approach is to open your manufacturer's support page, enter your exact model or service tag, and follow their step-by-step instructions and included flashing tool.
Before flashing, connect a laptop to AC power or use a UPS on a desktop, close other software, and do not interrupt the process, restart, or power down until the tool reports success. Many modern boards also offer a built-in firmware update option within the Uefi setup screen, which is generally the most dependable method. If your system is stable and no advisory or feature you need applies to you, leaving the firmware as-is is a perfectly reasonable choice. Windows Update may deliver some firmware for certain devices, but major platform Bios updates usually come directly from the manufacturer.
Treat every firmware update as deliberate, read the release notes first, and confirm that the version you are about to install is newer than and compatible with what is on your board today.
Firmware is the code baked into a chip on the motherboard that runs the instant you press the power button, long before Windows exists in memory. Uefi, the modern successor to the classic Bios, powers on the processor, trains the memory, initializes the storage and USB controllers, and runs a self-test of the core hardware. Only once that groundwork is laid does it locate a boot device and hand control to the operating system loader.
Beyond starting the machine, Uefi holds the settings that shape how the platform behaves: boot order, Secure Boot, virtualization support, memory timing profiles, fan curves, and security features such as the firmware TPM. It also carries microcode and platform initialization routines from the CPU maker, which is why a firmware update is sometimes the only way to add support for a newer processor or to close a security hole that lives below the operating system.
Because all of this runs beneath Windows, a driver cannot substitute for it and Windows cannot repair it. Updating it means erasing and rewriting the firmware chip itself, which is exactly why it deserves more caution than any ordinary driver task.
Expanded guide insight
The practical bios & uefi context
Firmware runs before Windows and carries a different risk profile from drivers. Most PCs do not need a manual Bios update; a specific documented reason should come first.
A Bios update is not a general performance tune-up.
Windows Update may safely deliver firmware for many PCs.
A firmware problem cannot be undone with Safe Mode.
Take care: Do not interrupt a firmware flash. Record your recovery key and use stable power before you begin.
Fast checks for common bios & uefi problems
What you see
Likely area to check
Safe first move
Considering an update for a working PC
No specific firmware issue is identified
Leave it alone and review the manufacturer’s release notes
BitLocker asks for recovery after a change
The boot measurement changed
Use the saved recovery key; do not repeatedly change settings
Screen stays blank during a firmware update
The system may still be processing
Wait and do not remove power
Start with the lowest-risk check that matches what you see, then return to the detailed sections below if it does not resolve the issue.
Identify your exact device first
Enter the Uefi setup screen at startup, usually by pressing Delete, F2, or F10, where the current firmware version is displayed on the main page.
In Windows, open System Information and read the Bios Version/Date line to see the installed version without rebooting.
For a prebuilt or laptop, locate your model, product number, or service tag on the manufacturer's label so you can match firmware to the exact machine.
For a custom desktop, read the exact motherboard model and board revision printed on the board itself, since revisions can use different firmware files.
Note whether the board offers a built-in flashing tool such as EZ Flash, Q-Flash, M-Flash, or Instant Flash, which is the safest update path.
Check whether the board has a dual-Bios or flashback feature, which changes how recovery works if an update fails.
10/11 only where listed for the exact model and firmware package
Runs on Gigabyte Aorus or Aero laptops
Scan the list first, then open the family that matches your hardware for the full reference.
Reference coverage summarizes the Windows releases discussed in this catalog; it is not certified compatibility. Confirm the exact device or PC model, hardware revision, current Windows release, and current package requirements on the publisher source before making a change.
Reference coverage: 10/11 where listed for the exact model
This family covers Uefi firmware used on ASUS ROG, Prime, and TUF desktop motherboards. Firmware selection is by the exact model shown on the board and support page; also match a hardware revision when ASUS distinguishes one. ASUS documents EZ Flash for supported models, but the available update method and downgrade policy are model-specific. Back up important files and the BitLocker recovery key before proceeding.
How you recognize it
Board branded ROG, Prime, or TUF
EZ Flash utility available on supported models
Match the exact motherboard model and any revision distinguished on its support page; use only an update method documented for that model.
Reference coverage: 10/11 only where listed for the exact model and firmware package
This covers the Uefi firmware on Gigabyte desktop boards, including the Aorus and UD lines. It governs the same low-level platform settings as any board firmware and is applied most safely with the built-in Q-Flash tool. Because Gigabyte boards can share a model name across revisions, confirm the file matches your specific revision before flashing, since a mismatch can leave the board unbootable.
How you recognize it
Board branded Aorus or UD
Q-Flash utility available in the Bios
Use Q-Flash from within the Bios; verify the file matches your board revision.
Reference coverage: 10/11 only where listed for the exact model and firmware package
MSI desktop boards use the Click Bios interface for their Uefi firmware, spanning the MPG, MAG, and PRO ranges. It handles boot order, memory profiles, and platform features. The preferred update route is the built-in M-Flash tool, which loads firmware from USB. Confirm the exact model string printed on the board so you apply the file intended for it rather than a similarly named model.
How you recognize it
Board branded MPG, MAG, or PRO
M-Flash utility available in the Bios
M-Flash within the Bios is preferred; confirm the exact model string.
Reference coverage: 10/11 only where listed for the exact model and firmware package
This is the Uefi firmware for ASRock desktop motherboards such as the Steel Legend and Taichi lines. It initializes the platform and stores boot and tuning settings. The Instant Flash tool built into the Uefi menu is the recommended way to update it, reading the firmware file directly from a USB drive. In general, select the file listed for your specific board model to avoid an incompatible flash.
How you recognize it
Board branded Steel Legend or Taichi
Instant Flash available in the Uefi menu
Use Instant Flash from the Uefi menu with the file for your specific board.
Reference coverage: 10/11 only where listed for the exact model and firmware package
This is the OEM system firmware for Dell desktops and laptops across the OptiPlex, Latitude, XPS, and Inspiron lines. It is customized by Dell and delivered as a signed update package chosen by your Service Tag. Because it is tied to the exact machine, only the Dell package for your Service Tag is appropriate; a chipset vendor's generic firmware is not generally a substitute.
How you recognize it
Chosen by Dell Service Tag
Distributed as a signed Dell update package
OEM firmware only. Select Dell's signed update package with the Service Tag for this computer.
Reference coverage: 10/11 only where listed for the exact model and firmware package
HP system firmware covers the EliteBook, ProBook, Pavilion, and OMEN families, supplied only by HP as a signed package matched to your product number. It runs the platform initialization for these business and consumer machines. Enter the product number on HP's support site to get the correct file, and expect settings to reset to defaults after applying it.
How you recognize it
Chosen by HP product number
Signed HP firmware package
OEM firmware only. Enter your product number for the correct package.
Reference coverage: 10/11 only where listed for the exact model and firmware package
This is Lenovo's OEM firmware for ThinkPad, ThinkCentre, IdeaPad, and Legion systems, identified by machine type and model. It handles boot, security, and platform settings specific to each chassis. Lenovo firmware is not interchangeable between machine types, so confirm your machine type before downloading, and apply it with the machine on steady power.
How you recognize it
Chosen by Lenovo machine type and model
Covers ThinkPad, ThinkCentre, IdeaPad, and Legion
OEM firmware only. Match the download to the Lenovo machine type and model.
Reference coverage: 10/11 only where listed for the exact model and firmware package
Acer system firmware serves the Aspire, Swift, Predator, and Nitro ranges and comes only from Acer for the exact model. It performs the platform startup and holds the machine's settings. Select your precise model on Acer's support site to obtain the right file, since firmware built for a similar model in the same family can still be incompatible with your board.
How you recognize it
Chosen by Acer model such as Aspire, Swift, Predator, or Nitro
Acer-signed firmware package
OEM firmware only. Select your exact model on Acer support.
Reference coverage: releases supported for the exact Surface model
Surface devices run Microsoft firmware delivered through Windows Update and model-specific Surface driver and firmware packages. Semm and Dfci are organizational management technologies available only for supported Surface models and configurations; they are not recovery features. Use Microsoft's package for the exact Surface model and review that model's servicing documentation.
How you recognize it
Runs on supported Surface tablets and laptops
Delivered via Windows Update and model-specific Surface packages
Surface Uefi is delivered through Windows Update and Microsoft's driver/firmware packages for your model.
Reference coverage: 10/11 only where listed for the exact model and firmware package
These are the Intel platform pieces, including the Management Engine, that live inside a system's firmware and handle low-level platform and security functions. On a prebuilt or OEM machine they are validated and packaged by the PC maker, not applied straight from Intel. Obtain any ME or platform firmware component through your PC maker's firmware package so it matches the rest of your board's firmware.
How you recognize it
Reported as an Intel Management Engine interface in Device Manager
Packaged inside the OEM firmware update
On prebuilt or OEM systems, obtain ME/firmware components from your PC maker, not directly from Intel.
Reference coverage: 10/11 only where listed for the exact model and firmware package
Agesa is AMD's platform initialization code that trains memory and enables CPU support, and it is embedded inside a motherboard or PC maker's Bios package rather than distributed as a standalone AMD file. Newer Agesa revisions often accompany support for a newer AMD processor. To get an Agesa update, apply the board maker's latest Bios for your model rather than looking for a separate AMD download.
How you recognize it
Delivered inside a motherboard maker's Bios release
Often noted in release notes as an Agesa revision
Agesa updates are delivered by your motherboard or PC maker inside their Bios package, not as a standalone AMD download.
Reference coverage: 10/11 only where listed for the exact model and firmware package
This is the OEM firmware for ASUS laptops such as the Zenbook, Vivobook, and ROG lines, and it differs from ASUS desktop board firmware. It is specific to each laptop model and comes only from ASUS support for that model. Apply it with the laptop plugged into AC power, and use only the package listed for your exact laptop to avoid an incompatible flash.
How you recognize it
Runs on ASUS laptops such as Zenbook, Vivobook, or ROG
Chosen by exact ASUS laptop model
Laptop firmware is OEM-specific; use the package for your exact laptop model.
Reference coverage: 10/11 only where listed for the exact model and firmware package
MSI laptop firmware covers gaming and productivity lines such as the Stealth, Katana, and Prestige, and it is distinct from MSI's desktop Click Bios. Each model has its own firmware from MSI, so use only the file listed for your specific laptop. Keep the laptop on AC power during the update, and do not interrupt the process once it starts.
How you recognize it
Runs on MSI laptops such as Stealth, Katana, or Prestige
Chosen by exact MSI laptop model
Use only the firmware listed for your specific laptop model.
Reference coverage: 10/11 only where listed for the exact model and firmware package
This is Gigabyte's OEM laptop firmware for the Aorus and Aero ranges, separate from its desktop motherboard Bios. It is matched to the exact laptop model and supplied by Gigabyte. Confirm the model before flashing and apply it on AC power; because laptop firmware controls thermal and power behavior tightly, using a file for the wrong model can cause serious problems.
How you recognize it
Runs on Gigabyte Aorus or Aero laptops
Chosen by exact laptop model
OEM laptop firmware; confirm the exact model before flashing.
Device Driver Guide does not host, mirror, or alter driver files. The official-source citations below are maintained separately from this reference material and never point to third-party mirrors.
Where the correct package usually comes from
The only correct source for platform firmware is the maker of the machine or the motherboard. For a laptop or prebuilt PC, go to your PC maker's support site, enter your exact model, product number, or service tag, and use the signed firmware package listed for that machine. That package is customized by the OEM, so a chipset vendor's generic firmware is not an appropriate substitute even when the underlying platform looks similar.
For a custom desktop, go to the motherboard maker's support page, select your exact board model and revision, and download the firmware file intended for it. Platform initialization pieces from the CPU maker, such as Agesa on AMD systems or management-engine components on Intel systems, arrive inside that vendor's Bios package rather than as separate downloads you apply yourself.
Do not use a third-party driver updater or an automatic Bios tool from an unknown source. Incorrect firmware can leave a board unable to boot.
Official sources and citations
These links serve two different purposes. A manufacturer support selector helps you find an exact model, but does not prove that a package or feature exists for every product in a family. Claim-specific documents explain the cited technology, requirement, lifecycle, or bounded package example. In either case, check the publisher domain, exact model and hardware revision, operating-system release, supported-products list, and package notes before making a change.
Microsoft Lifecycle: Lifecycle documentation for Windows 10 Home and Pro; separately governed editions and servicing channels can have different dates.
Microsoft Surface: Use this publisher-maintained page to match the exact Microsoft Surface model and operating-system release before selecting a package.
Device Driver Guide is an independent reference, not a repair or technical-support service. It does not host or mirror installers and receives no payment for these links. A named-model package example applies only to the systems and operating systems on that publisher page; it is not a recommendation to install the package across a family. Report a moved or incorrect link through the correction form.
Bios & Uefi reference tables
Do you actually need to flash
Situation
Recommended action
Why
System stable, nothing wrong
Leave firmware as it is
Every flash carries a small risk
Installing a newer CPU
Check support list, then flash
Older firmware may not recognize the chip
Symptom matches a release-note fix
Flash the version with the fix
Targeted fix addresses your problem
Maker issued a security advisory
Flash the advised version
The hole lives below Windows
Wanting the latest for its own sake
Do not flash
No benefit against the added risk
Firmware updates carry real risk, so weigh the reason before touching the chip.
Flash method by machine type
Machine type
Safest method
Where the file comes from
ASUS desktop board
EZ Flash inside Uefi
ASUS support for your board
Gigabyte desktop board
Q-Flash inside the Bios
Gigabyte support for your board
MSI desktop board
M-Flash inside the Bios
MSI support for your board
ASRock desktop board
Instant Flash in the Uefi menu
ASRock support for your board
Laptop or prebuilt PC
Signed OEM package
PC maker by model or service tag
Surface device
Windows Update or Surface pack
Microsoft for your model
Match the safe update path to the kind of system you have.
If a flash goes wrong
Failure
What to do
What not to do
Will not boot after a flash
Clear CMOS to defaults
Do not power-cycle repeatedly
Board has dual-Bios
Switch to the backup Bios
Do not reflash blindly
Board has flashback
Write firmware from USB
Do not skip the maker's exact steps
Power was lost mid-write
Contact maker support
Do not assume it is safe to boot
New CPU not detected
Flash with a supported CPU
Do not force an unsupported chip
Firmware cannot be rolled back like a driver, so match the failure to the right recovery path.
When updating helps, and when it does not
Firmware is the category where doing nothing is often the right answer. If the system is stable and no release note, security advisory, or new-hardware need applies to you, there is usually no benefit to updating, and every flash carries a small chance of trouble. Chasing the latest version for its own sake is not a good reason to touch the firmware chip.
The clear cases for updating are specific and documented: support for a processor you intend to install, a stability or compatibility fix that matches a problem you are seeing, or a security advisory from the maker. In each case, read the release notes first and confirm the available version is genuinely newer than and intended for your exact board.
When you do update, do it deliberately and once, using the maker's approved method, rather than treating it as a recurring maintenance habit like a driver refresh.
Before you install anything
Confirm there is a real reason to flash by reading the maker's release notes and matching a listed fix, CPU, or advisory to your situation.
Identify the exact machine or board and revision, and confirm the download is newer than and intended for that precise model.
Record your current firmware version and any custom settings such as boot order and memory profile, because an update may reset settings. If BitLocker or Device Encryption is enabled, locate and back up the recovery key before changing firmware; a firmware change can trigger recovery at the next boot.
Connect a laptop to AC power or place a desktop on a UPS so a power loss cannot interrupt the write.
Close all other software and pause background updates so nothing competes with the flashing tool.
Prefer the built-in Uefi flashing tool or the signed OEM package, and have the maker's recovery instructions on hand before you start.
How to update bios & uefi drivers
1
Confirm you actually need the update
A Bios or Uefi update is not a routine driver update. Read the manufacturer's release notes and only proceed if a listed fix, new processor support, or security advisory applies to your system. If your PC is stable and nothing relevant is listed, it is reasonable to leave the firmware unchanged.
2
Identify your exact device
On a prebuilt or laptop, look up your model, product number, or service tag on the manufacturer's support site. On a custom desktop, note the exact motherboard model and board revision. Firmware is model-specific, and using a file for a different revision can render the board unbootable.
3
Record the version, settings, and recovery key
In Uefi setup or Windows System Information, note the current version and confirm the package is for the exact model and any applicable board revision. Record custom settings. If BitLocker or Device Encryption is enabled, locate and back up its recovery key before updating because firmware changes can trigger recovery.
4
Secure power and close everything
Connect a laptop to AC power, or place a desktop on a UPS if possible. Close all other applications and pause any background updates. A power loss or interruption during flashing is the most common cause of a bricked board.
5
Flash using the manufacturer's approved method
Prefer the built-in tool inside the Uefi setup screen (for example, EZ Flash, Q-Flash, M-Flash, or Instant Flash) or the signed OEM update package. Do not interrupt the process, click away, restart, or power down until the tool clearly reports success and reboots on its own.
6
Verify and reconfigure after reboot
After the system restarts, re-enter Uefi setup, confirm the new version, and reapply any custom settings you recorded. Then boot into Windows and confirm normal operation before making further changes.
Confirm the install actually worked
After the system reboots on its own, re-enter Uefi setup and confirm the version string now matches the one you installed.
Reapply and confirm your recorded settings, including boot order, memory profile, and any security options that reset to defaults.
Boot into Windows and confirm the system starts normally and reaches the desktop without new errors.
Check that key hardware is present, such as all memory, storage, and a newly supported CPU if that was the reason for updating.
Confirm the Bios Version/Date shown in Windows System Information reflects the new firmware.
Undoing a bad bios & uefi install
Firmware rollback is model- and release-specific and is not equivalent to driver rollback; some makers block downgrades. If the machine will not boot after an update, follow the model's recovery instructions. Clear CMOS only when the manual prescribes it, because that resets settings but does not repair a partially written firmware image.
Many boards and OEM systems include a recovery path: a backup Bios on dual-Bios boards, a flashback button that writes firmware from a USB stick without a working CPU or display, or an OEM crisis-recovery procedure. Follow the maker's exact steps for your model, since these routines differ between vendors and using the wrong one can make things worse.
If a power loss interrupted the flash and no recovery feature exists, the chip may need professional reprogramming or service; do not assume a partially written firmware is safe to boot, and contact the manufacturer's support before trying anything further.
A power loss, restart, or shutdown during flashing can leave the firmware chip half-written and the board unable to start until it is recovered or serviced.
Using a firmware file for a different model or board revision can brick the board, so the file must match your hardware exactly.
An update may reset custom settings and can cause BitLocker or Device Encryption to request the recovery key, so record settings and secure that key beforehand.
Third-party or automatic Bios-update tools can install incorrect firmware and should not be used.
Enabling or disabling Secure Boot or changing storage mode during setup can prevent Windows from booting until the change is reversed.
A newer CPU may not be recognized on older firmware, and updating for that support can require a supported CPU or a flashback feature to complete.
Mistakes to avoid with bios & uefi
Flashing firmware for no documented reason, taking on risk with nothing to gain.
Using a file for the wrong model or board revision, which can brick the board.
Interrupting the flash with a restart or power loss, leaving the chip half-written.
Trusting a third-party auto-update tool that can install incorrect or unsigned firmware.
Flashing a laptop on battery instead of AC power, risking a mid-write shutdown.
Not recording custom settings first, then losing boot order and memory profiles.
Assuming firmware can be rolled back like a driver when it cannot.
Power-cycling repeatedly after a failed flash instead of clearing CMOS or using recovery.
Situations readers arrive with
I read that a Bios update is out for my motherboard. Should I just install it to stay current?
Not by default. Read the release notes first and only flash if a listed fix, a CPU you plan to install, or a security advisory applies to you. If the system is stable and nothing relevant is listed, leaving the firmware alone is a reasonable choice.
I dropped a newer processor into my board and now it will not display anything at all.
Older firmware may not recognize the new CPU. Check the maker's CPU support list for your exact board. If the board has a Bios Flashback feature, you can update firmware from a USB stick without a working CPU; otherwise you may need a supported chip to flash first.
The update tool says the file is not valid for this system, but I am sure I picked my board.
You likely have the wrong model or board revision. Return to the maker's support page, re-enter your exact model, product number, or service tag, and confirm the board revision printed on the board matches. Only download the file that matches precisely.
My laptop shut down during a Bios flash because the battery died. Now it will not turn on.
Do not keep trying to power it on. If the machine has an OEM Bios recovery routine, follow the maker's exact steps for your model. If there is no recovery feature, contact the maker's support, since a partially written firmware chip may need professional service.
After updating my Bios, all my boot order and memory settings are gone.
That is expected, since a flash resets settings to factory defaults. Re-enter Uefi setup and reapply your boot order, memory profile, and any security options from the notes you took beforehand. If you did not record them, set them again from scratch.
Symptom-by-symptom troubleshooting
System will not boot after a firmware update
Do not repeatedly power-cycle or assume a downgrade is supported. Follow the recovery instructions for the exact model. Use Clear CMOS, backup-firmware, or USB recovery features only when that model's manual documents them; otherwise contact the manufacturer.
The update tool reports the file is not valid for this system
You likely downloaded firmware for a different model or board revision. Return to the manufacturer's support page, re-enter your exact model, product number, or service tag, and download the file that matches precisely.
Power was interrupted during flashing
If the board has Bios recovery or a backup Bios, follow the manufacturer's recovery procedure. If not, contact the manufacturer's support; some boards may require official service. Do not assume a partial flash is safe to boot.
Custom settings disappeared after the update
This is expected. A firmware flash usually resets settings to factory defaults. Re-enter Uefi setup and reapply your boot order, memory profile, and other preferences from the notes you took beforehand.
Windows Update offered a firmware update I did not expect
Some vendors deliver signed firmware through Windows Update, especially for laptops and Surface devices. This is legitimate when it comes from your device maker. Review the update details, check that the device is on power, and let it complete without interruption.
New CPU is not recognized on an older motherboard
The board may require a newer firmware version for support. Check the manufacturer's CPU support list for your board, then apply the required firmware using their recommended method, ideally with a supported CPU already installed or via a Bios Flashback feature if the board provides one.
Not sure whether the available version is newer than mine
Compare the version string shown in Uefi setup or Windows System Information against the version on the download page. Do not flash if you cannot confirm the available file is newer and intended for your exact model.
A third-party app is prompting to auto-update my Bios
Do not use third-party 'driver updater' or firmware tools. They can install incorrect or unsigned firmware. Update only through the manufacturer's official package or the tool built into your Uefi setup.
Frequently asked questions
Is updating my Bios the same as updating a driver?
No. Drivers are software that lets Windows talk to a device and can be updated with little risk. Bios/Uefi is low-level firmware that runs before Windows, and an interrupted or incorrect update can prevent the system from booting. Treat it as a deliberate maintenance task, not a routine update.
Should I update my Bios just to have the latest version?
Not necessarily. If your system is stable and no release note, security advisory, or new-hardware requirement applies to you, there is often no benefit to updating. Update when there is a specific, documented reason.
Where do I get the correct firmware for a laptop or prebuilt PC?
Only from the computer maker's support site, matched to your exact model, product number, or service tag. Laptop and prebuilt firmware is OEM-customized and should not be sourced from a chipset vendor directly.
What is the safest way to flash on a desktop motherboard?
Use the tool built into the Uefi setup screen, such as EZ Flash, Q-Flash, M-Flash, or Instant Flash, with the exact file for your board model and revision. Keep the system on stable power and do not interrupt the process.
Why does the manufacturer warn me not to interrupt the update?
During flashing, the firmware chip is being erased and rewritten. A power loss, restart, or shutdown at that moment can leave the chip in an incomplete state, which may make the board unable to start until it is recovered or serviced.
What should I do before I start?
Confirm you need the update, identify your exact model, record your current version and settings, connect to steady power, and close other software. Then use only the manufacturer's approved method.
Can Windows Update handle firmware for me?
Sometimes. Vendors such as Microsoft for Surface and some laptop makers deliver signed firmware through Windows Update. Major desktop platform Bios updates, however, usually come directly from the motherboard or PC maker.
My PC works fine. Do I ever need to touch the Bios?
Often not. Common reasons to update are support for a newer processor, a documented stability or compatibility fix, or a security advisory. Absent those, leaving stable firmware alone is a valid choice.
Terms used on this page
Uefi
The modern firmware interface that initializes hardware and boots the system, replacing the legacy Bios.
Flashing
The act of erasing and rewriting the firmware chip with a new version.
Clear CMOS
Resetting firmware settings to defaults using a jumper or by removing the coin battery.
Secure Boot
A Uefi feature that only allows signed boot code to run, guarding against boot-level tampering.
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